The trailer for 300 does not reveal the name of the film until the end to build suspense and curiosity. It does not identify the starring actors. It shows a lot of bloody and brutal action scenes. The music indicates it is an action film. There is no voiceover. The editing is faster paced than a film clip to engage viewers' interest. The speed remains consistent. The last frame reveals the release date. The trailer is more effective at generating interest than the poster because it provides more information and context in a visually engaging way. The trailer would be shown before other action films for ages 15+ and on TV late at night.